播放框架db.play.JPA

Question

Okay. I am having big confusion with Play Framework. (Do they update their tutorial and documentation as often as their products?). I am trying to do the tutorial for CRUD app, and I am using JPA instead of Ebean (because the last one does not work, but, as appeared, the first either). Compiler says, it can not find class Model.

Internet offers to get the right dependencies and I already tried a lot of them. But I can't get the right one. Can anyone help me how to make this easiest thing work?

Here are my routes:

# Home page
GET     /                           controllers.Application.index()
POST    /person               controllers.Application.addPerson() 

Here are the app configuration, that were oncommented

db.default.driver=org.h2.Driver
db.default.url="jdbc:h2:mem:play"

built.sbt dependences:

libraryDependencies ++= Seq(
  Jdbc, 
  javaJpa,
  "org.hibernate" % "hibernate-entitymanager" % "4.3.5.Final"
  )

Application.java:

package controllers;

import models.Person;
import play.*;
import play.data.Form;
import play.mvc.*;

import views.html.*;
public class Application extends Controller {

    public Result index() {
        return ok(index.render("Your new application is ready."));
    }

    public Result addPerson(){
        Person person = Form.form(Person.class).bindFromRequest().get();
        person.save();
        return redirect(routes.Application.index());
    }

}

And models Person.java:

package models;

import java.util.*;
import javax.persistence.*;
 import play.db.jpa.*;

@Entity 
public class Person extends Model{
    @Id
    public String id;
    public String name;


}

Answer 1

By using JPA without Ebean it should be like described here For example (haven't tested actually) like fallowing code:

public Result addPerson(){
    Person person = Form.form(Person.class).bindFromRequest().get();
    EntityManager em = JPA.em();
    em.persist(person);
    em.flush();
    return redirect(routes.Application.index());
}

and model will look similar to that:

@Entity 
public class Person
{

    private long id;
    private String name;

    @Id
    @Column(name = "id")
    public long getId()
    {
        return id;
    }

    public void setId(long id)
    {
        this.id = id;
    }

    @Basic
    @Column(name = "name")
    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }
}